Tiny AVR Microcontroller Runs on a Fruit Battery
CO2 laser that cuts sheet metal
How to Make a Three Axis CNC Machine (Cheaply and Easily)
Convert your Honda Accord to run on trash
Build a Bike Boom Box
RGB Color Controllable High Power LED Room + Spot Lighting
Joule Thief Charger
Desulfator for 12V Car Batteries, in an Altoids Tin
FAST FOAM LATHE
New Rocket Powered Matchbox Cars! - Extreme!
Make an Iron Man Arc Reactor
HDDJ: Turning an old hard disk drive into a rotary input device
DIY Flash Diffuser with Hundreds of FREE Color Filters
Re-surfacing CDs so they work again.